diff --git a/README b/README
index c9ab090746..9158cb1283 100644
--- a/README
+++ b/README
@@ -204,6 +204,8 @@ REQUIREMENTS:
           CONFIG_MEMCG
 
         glibc >= 2.34
+        musl >= 1.2.5 with fde29c04adbab9d5b081bf6717b5458188647f1c
+                (required when building systemd with -Dlibc=musl)
         libxcrypt >= 4.4.0 (optional)
         libmount >= 2.30 (from util-linux)
                 (util-linux *must* be built without --enable-libmount-support-mtab)